Aoc adsl overhead control channel aa administrative Authority
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Aaoc ADSL overhead control channel AA Administrative Authority AAL ATM Adaptive Layer AAR Automatic Alternate Routing ABR Available Bandwidth Rate ABR Available Bit Rate ACD Automatic Call Distribution ACF Access Coordination Function ACK Acknowledgment ACM Adress Complete Message ACO Automatic Cut Off ACSE Association Control Service Element ACU Alarm Control Unit ADC Analog to Digital Converter ADM Add/Drop Multiplexer ADM 3X DS3 Add-Drop Multiplex ADPCM Adaptive Differential Pulse Code Modulation ADSI Analog Display Services Interface ADSL Asymmetric Digital Subscriber Line ADSS All Dielectric Self-Supporting ADTS Automated Digital Terminal Systems AERM Alignment Error Rate Monitor AFI Authority and Format Identifier AFSK Audio Frequency Shift Keying AFPS Automatic Facility Protection Switching Ai Action indicator AIN Advanced Intelligent Network AIS Alarm Indication Signal AIS-L Alarm Indication Signal - Line AIS-P Alarm Indication Signal - Path AIS-V Alarm Indication Signal - Virtual (Tributary) AIU Analog Interface Unit ALIT Automatic Line Insulation Test ALPS Automatic Loop Protection Switching AMA Automatic Message Accounting AMI Alternate Mark Inversion AMPS Advanced Mobile Phone Service ANC Access network Controller ANI Automatic Number Identification ANSI American National Standards Institute AON All Optical Network AP Access Point AP Action Point APDU Application Protocol Data Unit APR Alarm Processing Remote APS Automatic Protection Switching ARD Automatic Ring Down ARP Address Resolution Protocol AS56 Accunet Switched 56 ASB Application Specific Bits ASCII American Standard Code for Information Interchange ASN.1 Abstract Syntax Notation One ASP Application Service Provider ASP Assignment Source Point AT Access Tandems ATM Asynchronous Transfer Mode ATM-LI ATM Link Identifier ATM-PCI ATM Protocol Control Information ATM-SDU ATM Service Data Unit ATMM ATM Layer Management ATU-C ADSL Transceiver Unit - Central office end ATU-R ADSL Transceiver Unit - Remote terminal end
BB3ZS Bipolar 3 Zero Substitution B6ZS Bipolar 6 Zero Substitution B8ZS Bipolar 8 Zero Substitution B8ZS Bipolar 8 Zero Suppression B-CPE Broadband Customer Premises Equipment B-ICI Broadband Inter-Carrier Interface BAF Bellcore AMA Format Bc Committed Burst Size BCD Binary Coded Decimal BCM Bit Compression Multiplexer BDFB Battery Distribution Fuse Board BDCBB Battery Distribution Circuit Breaker Board BE Block Error BECN Backward Explicit Congestion Notification BER Basic Encoding Rules BER Bit Error Ratio BERT Bit Error Rate Tester BFCV Binary Facility Coding Value BGP Border Gateway Protocol BIB Backward Indicator Bit BIBR Backward Indicator Bit Received BIBT Backward Indicator Bit to be Transmitted BIBX Backward Indicator Bit eXpected BIP Bit Interleaved Parity BISDN Broadband Integrated Services Digital Network BISUP Broadband ISUP (ISDN User Part) BLER Block Error Rate BOC Bell Operating Company BOM Beginning of Message BORSCHT Battery feed, Overvoltage protection, Ringing, Signaling, Coding, Hybrid, and Testing BPOP Building Point of Presence bps Bits Per Second BPV Bipolar Violation BRA Basic Rate Access BRI Basic Rate Interface (ISDN) BRITE Basic Rate Interface Transmission Extension BSC Base Station Controller BSC Bisynchronous Communications (protocol) BSN Backward Sequence Number BSNR Backward Sequence Number Received BSNT Backward Sequence Number to be Transmitted BSP Bell System Practice BSRF Basic System Reference Frequency BSS Base Station Subsystem BSS Basic Service Set BSS Broadband Switching System BTS Base Station Transceiver
CC/R Command/Response C/R Control/Response Indication Bit CAC Connection Admission Control CAL Customer Access Line CAP Carrierless Amplitude Phase (modulated) CAP Competitive Access Provider CAS Channel Associated Signaling CATV Cable television CBCU Centralized Broadband Control Unit CBDS Connectionless Broadband Data Services CBR Constant Bit Rate CBQ Class-Based Queuing Cc Committed Burst Size CCC Clear Channel Capability CCE Consistency Check End CCS Hundred Call Seconds CCIS Common Channel Inter-office Signaling CCITT Comite Consultatif Internationale Telegraphique et Telephonique CCITT International Telegraph and Telephone Consultative Committee CCR Consistency Check request CCR Customer Controlled Reconfiguration CCS Common Channel Signaling CCS Hundred Call Seconds CCSA Common Control Switching Arrangement CCU Common Control Unit CDMA Code Division Multiple Access CDO Community Dial Office CDPD Cellular Digital Packet Data CEI Connection Endpoint Identifier CEPT Committee of European Postal & Telephone (authorities) CES Circuit Emulation Service CES Connection Endpoint Suffix CEV Controlled Environment Vault CF Coin First CFA Carrier Failure Alarm CGA Carrier Group Alarm CGW Customer Gateway CH Cell Header CHTML Compact Hyper Text Markup Language CI Customer Installation CID Craft Interface Device CIR Committed Information Rate CIU Communications Interface Unit CLEC Competitive Local Exchange Carrier CLLM Consolidated Link Layer Management CLNP Connectionless-mode Network Protocol CLNS Connectionless Network Services CLP Cell Loss Priority (CLP Bit) CLS Connectionless Service CMIP Common Management Information Protocol CMIS Common Management Information Service CMISE Common Management Information Service Element CNM Customer Network Management CO Central Office COC Central Office Connection CODEC COder-DECoder COFA Change of Frame Alignment COM Continuation of Message COMPANDER COMpressor/exPANDER COPS Common Open Policy Service CORBA Common Object Request Broker Architecture COT Central Office Terminal CP Cell Payload CP Customer Premises CPCS Common Part Convergence Sublayer CPE Customer Premises Equipment CPI Computer-PBX Interface CPNI Customer Proprietary Network Information CPP Calling Party Pays CPS Customer Premises System CPU Central Processor Unit CR Call Reference CRC Cyclic Redundancy Checkword CRM Circuit Reservation Message CRS Cell relay Service CRV Call Reference Value CS Convergence Sublayer CSA Canadian Standards Association CSA Carrier Service Area CSAP Core Service Access Point CSC Common Signaling Channel CSDU Core Service Data Unit CSH Convergence Sublayer Header CSMA/CD Carrier Sense Multiple Access/Collision Detect CU Channel Unit CS Convergence Sublayer CSA Carrier Serving Areas CSR Consistency Check Request CST Convergence Sublayer Trailer CSU Channel Service Unit CS-PDU Convergence Sub-layer PDU CT Channel Termination CT Computer Telephony CTU Channel Test Unit CU Channel Unit CUG Closed Users Group CV Coding Violation CVSD Continuously Variable Slope Delta Modulation CPE Customer Premise Equipment CPI Computer-PBX Interface CTS Clear to Send CV Coding Violation CUG Closed Users Group CVSD Continuously Variable Slope, Delta Modulation CWC Center Weight Control
DDA Distribution Area DACS Digital Access and Cross Connect DAVIC Digital Audio Video Council DBS Direct Broadcast Satellite dB deciBell dBm dB relative to one milliwatt DBN Dial-Back Number dBrn dB relative to noise dBrnc dB relative to noise (C-Notch or C-Message) DCB Digital Channel Bank DCC Data Communications Channel DCC Data Country Code DCCX Direct Circuit Control Exchange DCE Data Circuit-terminating Equipment DCE Data Communications Equipment DCF Distributed Coordination Function DCN Data Communications Network DCS Digital Cross-connect DCSs Digital Cross-Connect System DDD Direct Distance Dialing DDS Dataphone Digital Service (registered trademark of AT&T C0.) DDS Digital Data Service DDSD Delay Dial Start Dial DE Discard Eligibility DF Distributing Frame DFL Distributed Feedback Laser DFRI Datacom Reference Frame Input DHCP Dynamic Host Configuration Protocol DID Directed Inward Dialing DL Data Link DLC Digital Loop Carrier DLCI Data Link Connection Identifier DLL Dial Long Line DLU Digtal Line Unit DM Disconnected Mode DMI Digital Multiplex Interface DMPB Digital Multipoint Bridging DMS Digital Multiplex System DMT Discrete Multitone DNIC Data Network Identification Code DNIC Data Network Interface (2B+D ISDN) DNIS Dialed Number Identification Service DNS Domain Name System DOCSIS Data Over Cable Service Interface Specification DoV Data Over Voice DP Dial Pulse DPA Distributed Power Architecture DPBX Digital Private Brance Exchange DPC Destination Point Code DPCM Differential Pulse Code Modulation DPDU Data (link) Protocol Data Unit DPL Digital Power Line DPO Dial Pulse Originate DPT Dial Pulse Terminate DPT Dynamic Packet Transport DS0 Digital Signal Zero - 64 Kb/s data/voice chan DS1 Digital Signal One (DS0 x 24 mux = 24 DS0) DS2 Digital Signal 2 (DS1 x 4 mux = 96 DS0) DS3 Digital Signal 3(DS2 x 7 mux = 672 DS0) DSI Digital Speech Interpolation DSL Digital Subscriber Line DSLAM Digital Subscriber Line Access Multiplexer DSODP Digital Service Office Dataport DSP Digital Signal Processor DSSS Direct Sequence Spread Spectrum DSU Digital Service Unit DSX Digital Signal Cross-connect DSSS Direct Sequence Spread Spectrum DTAU Digital Test Access Unit DTE Data Terminal Equipment DTF Dial Tone First DTF Digital Transmission Facility DTI Digital Trunk Interface DTMF Dual Tone Multiple Frequency DTR Data Terminal Ready DTS Digital Terminal Systems DTS Digital Transmission Systems DTU Data Terminal Unit DUP Data User Part DVI Digital Video Interleaved DWDM Dense Wavelength Division Multiplexing DX Duplex DXC Digital Cross Connect DXI Data Exchange Interface D/I Drop and Insert D3 Third generation channel bank (24 chans on T1) D4 Fourth generation channel bank (48 voice chans on 2 T1's or 1 T-1C) EEA Extended Address EAI Enterprise Application Integration EBCDIC Extended Binary Coded Decimal Information Code EC Echo Canceling EC-n Electrical Carrier (e.g., EC-1) ECSA Exchange Carriers Standards Association EDFA Erbium-Doped Fiber Amplifier EDI Electronic Data Interchange EDSX Electronic Digital Signal Cross-Connect EFCI Explicit Forward Congestion Indication EFD Event Forwarding Discriminator EFS Error Free Second EGP Exterior Gateway Protocol EIM Errored Interval Monitored ELEC Ethernet Local Exchange Carrier ELFEXT Equal Level Far End Crosstalk EM Element Manager EML Element Management Layer EMI Electromagnetic Interference EMS Element Management System EOC Embedded Operations Channel EOM End of Message EPSCS Enhanced Private Switch Controlled System ERL Echo Return Loss ERM Explicit Rate Marketing ES Errored Second ESF Extended Super Frame ESG Enhanced Service Gateway ESFDL Extended Super Frame Data-Link ESI End System Identifier ESS Electronic Switching System ET Exchange Termination ETN Electronic Tandem Network ETSI European Telecommunications Standards Institute EXZ Excess Zeros FFAS Frame Alignment Signal FAW Frame Alignment Word FB Framing Bit FBWA Fixed Broadband Wireless Access FCC Federal Communications Commission FCS Frame Check Sequence FDDI Fiber Distributed Data Interface FDI Feeder Distribution Interface FDL Facilities Data Link FDLC Fujitsu Digital Loop Carrier FDM Frequency Division Multiplexing FE Frame synchronization bit error Event FEAC Far End Alarm and Control FEBE Far End Block Error FEBE-f Far End Block Error Count - fast data FEBE-i Far End Block Error Count - interleaved data FEC Forward Error Correction FECC-f Forward Error Correction Count - fast data FECC-i Forward Error Correction Count - interleaved data FECN Forward Explicit Congestion Notification FELB Far End Loop Back FERF Far End Receive Failure FEXT Far-End Cross Talk FHSS Frequency Hopping Spread Spectrum FI Facility Identification FIB Forward Indicator Bit FIBR Forward Indicator Bit Received FIBT Forward Indicator Bit to be Transmitted FIBX Forward Indicator Bit eXpected FIC Frame Identification Code FIFO First In First Out FISU Fill-In Signal Unit FITL Fiber In The Loop FLL Fixed Loss Loop FOTS Fiber Optical Transmission System FPS Framing Pattern Sequence FR-SSCS Frame Relay Service Specific Convergence Sub-layer FRAD Frame Relay Access Device FRAD Frame Relay Assembler/Disassembler FRF-LMI Frame Relay Forum - Local Management Interface FRMR Frame Reject FR PVC Frame Relay Permanent Virtual Connection FRS Frame Relay Service FRSS Frame Relay Switching System FSK Frequency Shift Keying FSN Forward Sequence Number FTAM File Transfer, Access and Management FTP File Transfer Protocol FTSC Federal Telecommunications Standards Committee FTTC Fiber to the Curb FTTH Fiber to the House FTTL Fiber to the Loop FTTN Fiber to the Neighborhood FT1 Fractional T1 FUNI Frame (relay) User Network Interface FXO Foreign Exchange Office FX Foreign Exchange FXO Foreign Exchange Office FXS Foreign Exchange Subscriber GGFC Generic Flow Control GFI General Format Identifier GGP Gateway to Gateway Protocol GGSN Gateway GPRS Support Node GOS Grade of Service GOSIP Government Open System Interconnection Profiles GPRS General Packet Radio Service GPRS General Packet Radio System GPS Global Positioning System GS Ground Start GSM Global System for Mobile (telecommunications) GTXC Global Telephone Exchange Carrier
HHCDS High Capacity Digital Services HCV High Capacity Voice HDB3 High-Density Bipolar Three-Bit substitution HDLC High (level) Data Link Control HDML Handheld Device Markup Language HDSL High (Data Rate) Subscriber Line HDSL2 High (Data Rate) Subscriber Line (w/6dB noise margin) HDT Host Digital Terminal HEC Header Error Control HFC Hybrid Fiber Coax HLR Home Location Register HPC High Probability of Completion HSCWD High Speed Circuit Switched Data HTML Hypertext Markup Language HTTP Hypertext Transfer Protocol HTU HDSL Transmission Unit HTU-C HDSL Transmission Unit - Central Office HTU-R HDSL Transmission Unit - Remote IIAA Initial Address Acknowledgement IAB Internet Advisory Board IAC Initial Alignment Control IAD Integrated Access Device IAM Initial Address Message IAR Initial Address Reject IAT Integrated Access Terminal IC-POT Interexchange Carrier-Point of Termination ICCF Interexchange Carrier Compatibility Forum ICD International Code Designator ICI Inter-Carrier Interface ICIP Inter-Carrier Interface Protocol ICL Inserted Connection Loss ICMP Internet Control Message Protocol ICOT Inner City and Outstate Trunk IDCP Internet Device Control Protocol IDF Intermediate Distribution Frame IDLC Integrated Digital Loop Carrier IDS Intrusion Detection System IDT Information Distribution Company IDT Integrated Digital Terminal IDU Interface Data Unit IEEE Institute of Electrical and Electronics Engineers IG Interface Group IGP Interior Gateway Protocol IIME Intra-network, Inter-SSS Mapping Entity IIS Internet Information Server ISID Idle Signal Identification ISSP Interim Interswitch Signaling Protocol ILEC Incumbent Local Exchange Carrier ILEC Independent Local Exchange Carrier ILMI Interim Local Management Interface IMP Interface Message Processors IMS Interactive Multimedia Server IMSI International Mobile Subscriber Identity IN Intelligent Network INA Information Network Architecture INE Intelligent Network Element IO Inter-Office IOC Inter-Office Channel IP Intelligent Peripheral IP Internet Protocol IPSec Internet Protocol Security IPM Interpersonal Messaging System IPS Instructions Per Second ISDN Integrated Services Digital Network ISDNUP Integrated Services Digital Network User Part ISM Instrumentation, Scientific, and Medical ISO International Standards Organization ISP Internet Service Provider ISSI Inter-Switching System Interface ISSIP Inter-Switching System Interface Protocol ISUP ISDN User Part ITFS Instructional Television Fixed Services ITU International Telecommunication Union IWF Inter-Working Function IWU Inter-Working Unit IXC Interexchange Carrier
JJIS Jurisdictional Interstate Service KLLAN Local Area Network LAN PHY LAN Physical Layer LANE Local Area Network Emulation LAP-D Link Access Protocol-D channel LAPB Link Access Protocol Balanced LAPD Link Access Procedure D channel LATA Local Access and Transport Area LAW Local Area Wireless LC Load Coil LC Loop Closure LCA Line Circut Address LCF Loop Current Feed LCFO Loop Current Feed Open LCGN Logical Channel Group Number LCN Logical Channel Number LCP Link Control Protocol LDAP Lightweight Directory Access Protocol LDC LATA Distribution Channel LDF Local Distribution Frame LDM Limited Distance Modem LDN Listed Directory Number LDS Local Digital Switch LEC Local Exchange Carrier LEN Line Equipment Number LES LAN Emulation Services LET Line Equipment Transfer LGE Loop- or Ground-Start Exchange LGS Loop- or Ground-Start Subscriber LIDB Line Information Database LLB Line Loop Back LLC Logical Link Control LLSC signaling Link management; Link Set Control LMC Loop Maintenance Center LMDS Local Multipoint Distribution Service LMI Local Management Interface LMOS Loop Maintenance Operations System LMU Line Monitor Unit LNP Local Number Portability LO Loop Open LOF Loss Of Frame LOH Line Overhead LOP Loss Of Pointer LOP-L Loss Of Pointer - Line LOP-P Loss Of Pointer - Path LOP-V Loss Of Pointer - Virtual LOS Line of Sight LOS Loss Of Signal LOSW Loss Of Synchronous Word LPC Linear Predictive Coding LPDP Local Policy Decision Point LPU Line Protection Unit LRB Loop Reverse Battery LRN Local Routing Number LS Loop Start LSAC signaling Link management; Signaling Link Activity Control LSAP Link Service Access Point LSC Link State Control LSLA signaling Link management; Signaling Link Activation LSLD signaling Link management; Signaling Link Deactivation LSLR signaling Link management; Signaling Link Restoration LSMS Local Service Management System LSOA Local Service Order Administration LSSGR LATA Switching Systems Generic Requirements LSSU Link Status Signal Unit LSU Line Switch Unit LT Line Termination LTE Line Terminal Equipment LU Line Unit LULT Line Unit/Line Termination LUNT Line Unit Network Termination LXT Local Exchange Terminal MMAC Media Access Control MAN Metropolitan Area Network MAPDU Management Application Protocol Data Unit MAT Metropolitan Area Trunk MB Maintenance Busy MCU Multiplexer Control Unit MDCP Media Device Control Protocol MDF Main Distribution Frame MDS Multipoint Distribution Service MDTP Media Device Transport Protocol MF Multiple Frequency MFAS Multi-Frame Alignment Signal MGCP Media Gateway Control Protocol MRF Multilink Frame Relay MGCP Media Gateway Control Protocol MIB Management Information Base MIME Multipurpose Internet Mail Extension MIX Multimedia Internet Exchange MJU Multi-Junction Unit MLHG Multi-Line Hunt Group MLM Multi-Longitudinal Mode MLT Mechanized Loop Testing MLT Metalic Loop Test MMDX Multimedia Data Services MMDS Multichannel Multipoint Distribution Service MMDS Multimedia Data Services MO Managed Object MOC Managed Object Classes MOOS Manual Out-OF-Service MPLS Multi-Protocol Label Switching MPLS Multi-Protocol Layer Switching MPoA Multiple Protocol over ATM MSA Metropolitan Statistical Area MSDM Multipoint Substrate Data Mux MSO Multiple Service Operator MTAU Metalic Test Access Unit MTP Message Transfer Part MRVT MTP Routing Verification Test MTS Message Telephone System MTSO Mobile Telephone Switching Office MUB MultiUse Bearer service MULDEM MULtiplexer/DEMultiplexer MUX MULtiplexer/DEMultiplexer MVNO Mobile Virtual Network Operator
NN(r) Receive Sequence Number N(s) Send Sequence Number NACK Negative ACKnowledgement NADH North American Digital Hierarchy NAK Negative Acknowledgement NANP North American Numbering Plan NAS Network Attached Storage NAT Network Attached Storage NAT Network Address Translation NC Network Channel NCC Network Communications Controller NCI Network Channel Interface NCP Network Control Point NCP Network Control Protocol NCTE Network Channel Terminating Equipment NDF New Data Flag NE Network Element NEXT Near End Cross Talk NFAS Non-associated Facility Signaling NGDLC Next Generation Digital Loop Carrier NGN Next Generation Network NGW Network Gateway NI Network Interface NI Network Interface NI-1 National ISDN-1 NI-2 National ISDN-2 NIC Network Interface Card NIU Network Interface Unit NLPID Network Level Protocol ID NLOS Near Line of Sight NMA Network Management and Administration NMA Network Monitoring and Analysis NMC Network Management Center NML Network Management Layer NMP Network Management Protocol NMS Network Management System NNI Network Node Interface NNI Network-to-Network Interface NNTP Network News Transport Protocol NOC Network Operations Center NOS Network Operating System NOTE Network Office Terminating Equipment NPA Numbering Plan Area NPAC Number Portability Administration Center NPDU Network Protocol Data Unit NPRN Network Performance Report Message NPI Numbering Plan Identification NRIC National Reliability and Interoperatability Council NRZ Non-Return to Zero NSA Non-Service Affecting NSC Network Service Center NSF Network Specific Facilities NSI Network Service Interface NSP National Signaling Point NTE Network Terminating Equipment NTT Numbered Test Trunk NYIIX New York International Internet Exchange OOADM Optical Add-Drop Multiplexer OAM Operations, Administration, and Maintenance OAM&P Operations, Administration, Maintenance & Provisioning OAMP Operations, Administration, Maintenance Provisioning OC-n Optical Carrier (e.g., OC-3) OC-x Optical Carrier (e.g., OC-3) OCPD Over Current Protection Device OCU Office Channel Unit OCUDP Office Channel Unit Data Port OE Originating Equipment OEO Optical-Electrical-Optical OFA Optical Fiber Amplifier OFDM Orthogonal Frequency Division Multiplexing OIM Operations Interface Module OLNS Originating Line Number Screening OLP On-Line Provisioning OM Operational Measurement ONU Optical Network Unit OOD Object Oriented Design OOF Out Of Frame OOS Out Of Service OOS Out Of Synchronization OPN Outage Performance Monitoring OPS/INE Operations System/Intelligent Network Element OPX Off Premise Extension OR Office Regenerator ORB Office Repeater Bay OS Operations System OSI Open System Interconnection OSI Open System Interface OSPF Open Shortest Path First OSS Operation Support System OSS Operator Services System OTC Operating Company OTDR Optical Time Domain Reflectometer OUI Organizationally Unique Identifier
PP/F Poll/Final Bit PA Pointer Adjustment PABX Private Automatic Branch Exchange PAD Packet Assembler / Disassembler PAM Pass Along Message PAM Pulse Amplitude Modulation PAW Personal Area Wireless PBD Power Board PBX Private Branch Exchange PCF Point Coordination Function PCI Protocol Control Information PCM Pulse Code Modulation PCMCIA Personal Computer Memory Card International Association PCS Personal Communications Services PCTF Per-Call Test Failure PCU Packet Control Unit PD Protocol Discriminator PDH Plesiochronous Digital Hierarchy PDI-P Payload Defect Indicator - Path PDI V Payload Defect Indicator - Virtual PDN Public Data Network PDP Policy Decision Point PDU Protocol Data Unit PEP Policy Enforcement Point PFDL Policy Framework Definition Language PFM Packet Forwarding module PGTC Pair Gain Test Controller PGS Pair Gain System PHS Packet Handling System PHY Physical Layer (abbrev.) PHY-PCI Physical Layer Protocol Control Information PHY-SAP Physical Layer-Service Access Point PHY-SDU Physical Layer-Service Data Unit PHYM Physical Layer Management PIB Policy Information Base PID Path Identification PIP Pre-Impulsing Pulse PJC Pointer Justification Count PKI Public Key Infrastructure PL Private Line PLA Programmable Logic Array PLAR Private Line Automatic Ringdown PLB Payload Loop Back PLC Power Line Carrier PLCP Physical Layer Convergence Protocol PLS Private Line service PM Performance Monitoring PMD Physical Media Dependent PNNI Private Network Node Interface POC Positive Outage Control POH Path Overhead PON Passive Optical Network POP Point Of Presence POP Post Office Protocol PoS Packet Over SONET POS Point of Sale POT Point Of Termination POTS Plain Old Telephone Service POTS Plain Old Telephone System PPP Point to Point Protocol PPSN Public Packet Switched Network PRD Pseudo-Random Downstream PRI Primary Rate Interface (ISDN) PRBS Pseudo-Random Binary Sequence PRBS Pseudo-Random Bit Sequence PRM Performance Report Message PRS Primary Reference Source PRU Pseudo-Random Upstream PSELFEXT Power Sum Equal Far End Cross Talk PSDM Premium Substrate Data Mux PSDS Public Switched Digital Service PSK Pulse Shift Keying PSNEXT Power Sum Near End Cross Talk PSTN Public Switched Telephone Network PSX Power System Exchange PT Payload Type PTE Path Terminal Equipment PTI Payload Type Indicator PTT Postal, Telephone and Telegraph Authority PVC Permanent Virtual Circuit QQAM Quadrature Amplitude Modulation QoS Quality of Service QPA Quality Performance Analysis QRS Quasi Random Signal QRSS Quasi Random Signal Sequence RR Ring
RAD Remote Antenna Driver RAI Remote Alarm Indication RALB Resource All Busy RARP Reverse Address Resolution Ptotocol RAS Remote Access Server RAS Remote Access Service RASP Remote Antenna Signal Processing RBOC Regional Bell Operating Company RBS Robbed Bit Signaling RC Retransmission Counter RCV Receive RD Routing Domain RDF Remote Distribution Frame RDI Remote Defect Indicator RDI-L Remote Defect Indicator - Loop RDI-P Remote Defect Indicator - Path RDI-V Remote Defect Indicator - Virtual RDT Remote Digital Terminal RE Relaying Entity REN Ringer Equivalent Number RFCs Request For Comments RFI Radio Frequency Interference RIP Routing Information Protocol RLCI Receive Line Clock Input RLDI Receive Line Data Input RM Resource Management RNC Radio Network Controller RNR Receive Not Ready ROH Receiver Off Hook ROS Remote Operations Service ROSE Remote Operations Service Element RPR Resilient Packet Ring RR Receive Ready RSS Remote Switching Sites RSS Remote Switching System RSU Remote Switching Unit RT Remote Terminal RTA Rural Trading Area RTB Retransmission Buffer RTPC signaling Route management; transfer Prohibited Control RTR Retransmission indicator RTS Request To Send RTU Remote test Unit RX Receive RZ Return to Zero
SSAA Service Adaptive Access SABME Set Asynchronous Balance Mode Extender SAN Storage Area Network SAM Service Access Multiplexer SAMI SAM Interface SAN Storage Area Network SAP Service Access Point SAPI Service Access Point Indetifier SAR Segmentation And Reassembly SAR-PDU Segmentation and Reassembly PDU SBX Small Business Exchange SC-FDE Single Carrier Frequency Domain Equalization SCC Switching Control Center SCCP Signaling Connection Control Part SCCS Switching Control Center System SCE Service Creation Environment SCP Service Control Point SDCU Synchronous Data Channel Unit SDH Synchronous Digital Hierarchy (SONET) SDLC Synchronous Data Link Control SDP Session Description Protocol SDM Substrate Data Mux SDN Software Defined Network SDP Service Definition and Provisioning SDP Session Description Protocol SDSL Symmetric Digital Subscriber Line SEAL Simple and Efficient Adaptation Layer SEL Selector Field SEFL Single Ended Fault Locating SEP Signaling End Point SES Severe Errored Seconds SF Single Frequency SF Status Field SF Superframe SGCP Simple Gateway Control Protocol SGML Standard Generic Markup Language SGSN Serving GPRS Support Node SH SAR Sublayer Header SINAD Signal-to-Noise Plus Distortion (ratio) SI Service Information octet SIB Status Indication B (busy) SIE Status Indication E (emergency alignment) SIF Signaling Information Field SIN Status Indication N (normal alignment) SIO Status Indication O (out of alignment) SIP Session Initiation Protocol SIT Special Information Tone SL Service Layer SLA Service Level Agreement SLIC Subscriber Line Interface Card SLIP Serial Line Interface Protocol SLIP Serial LIne Internet Protocol SLS Single Link Set SMASE Systems Management Application Service Element SMC Switch Maintenance Center SMDF Subscriber Maintenance Distributing Frame SMDS Switched Multi-megabit Data Service SML Service Management Layer SMS Service Management System SMS Short Message Service SMTP Simple Mail Transfer Protocol SNA Systems Network Architecture SNAP Sub-Network Access Protocol SNI Subscriber-Network Interface SNMP Simple Network Management Protocol SNR Signal to Noise Ratio SO Serving Office SO/S Smart Omni-Orderwire Station SOA Service Order Administration SOH Section Overhead SOHO Small Office/Home Office SONET Synchronous Optical Network SP SAR Sublayer Payload SP Signaling Point SPC Stored Program Control SPCS Stored Program Control System SPE Synchronous Payload Envelope SPID Service Profile Identifier SPRM Supplementary Performance Report Message SPQR Senatus et Populus Qui Roma SQR Signal to Quantizing noise Ratio SRDM Sub Rate Data Multiplexer SRL Singing Return Loss SRM Signaling Route Management SRP Spatial Reuse Protocol SRTS Synchronous Residual Time Stamp SS Supervisory Center SS7 Signaling System No.7 SSCS Service Specific Convergence Sublayer SSL Secure Socket Layer SSP Service Switching Point SSP SCCP Subsystem Prohibited SSS SMDS Switching System ST SAR Sublayer Trailer STDM Statistical Time Division Multiplexer STE Section Terminal Equipment STP Signaling Trasfer Point STM Synchronous Transfer Module STP Shielded Twisted Pair STP Signaling Transfer Point STS Synchronous Transfer Signal STS-1 Synchronous Transport Signal (level)-1 SU Signal Unit SUERM Signaling Unit Error Rate Monitor SVC Switched Virtual Call SVC Switched Virtual Circuit SVC Switched Virtual Connection SWAP Shared Wireless Access Protocol SWF Switched Fractional SWF-DS1 Switched Fractional DS1 SYN Synchronization Character SYNTRAN SYNchronous TRANsmission TT Tip
TA Terminal Adapter TAC Terminal Access Circuit TACS Total Access Communications System TALI Transport Adapter Layer Interface TAP Test Access Path TAPI Telephony Application Programming Interface TASI Time Assigned Speech Interpolation TAU Test Access Unit TAU Time Assignment Unit TC Terminating Channel TC Transmission Convergence TCA Threshold Crossing Alert TCAP Transaction Capabilities Application Part TCM Tandem Connection Maintenance TCP Transmission Control Protocol TCP Transport Control Protocol TCP/IP Transmission Control Protocol/Internet Protocol TDM Time Division Multiplexing TDMA Time Division Multiple Access TDR Time Domain Reflectometer TE Terminal Equipment TEI Terminal Endpoint Identifier TELRIC Total Element Long-Run Incremental Cost TFO Tandem Free Operation TFTP Trivial File Transfer Protocol THL Trans-Hybrid Loss TL1 Transaction Language One TLP Transmission Level Point TLPU Telecommunications Line Protector Unit TLWS Trunk and Line Work Station TIMS Transmission Impairement Measuring Set TIRKS Trunk Integrated Records Keeping System TLP Transmission Level Point TMC Time slot Management Channel TMN Telecommunications Management Network TN Telephone Number TNS Transit Network Selection TOH Transport Overhead ToS Type of Service TOS Testing Operation System TPDU Transport Protocol Data Unit TPI Tip-Party Identification TRA Traffic Restart Allowed TRU Transmit/Receive Unit TRW Traffic Restart Waiting TRX Tandem Repeater Exchange TSC Test System Controller TSDU Transport Service Data Unit TSGR Transport System Generic Requirements TSI Time Slot Interchange TSID Test Signal Identification TSR Terabit Switch Router TTU Tandem T-1 Unit TX Transmit UUA Unnumbered Acknowledgement UAS Unavailable Seconds UCIC Unequipped Circuit Identification Code UDC Universal Digital Channel UDLC Universal Digital Loop Carrier UDP User Datagram Protocol UI Unit Interval UI Unnumbered Information (frame) UMTS Universal Mobile Telecommunications System UNI User Network Interface UNICODE UNIversal trunk-out-of-service Code UPA User Part Available UPC Usage Parameter Control UPS Uninterruptible Power System UPT User Part Test UPU User Oart Unavailable URL Uniform Resource Locator URL Universal Resource Locator USI User System Interface USOC Universal Service Order Code USOC Universal Service Ordering Code UTP Universal Twisted Pair UVG Universal Voice-grade Channel Unit VV(A) Acknowledge state Variable V(M) Recovery state Variable V(R) Receive state Variable V(S) Sent state Variable VAZO Violating All-Zero Octet VBR Variable Bit Rate VC Virtual Channel VC Virtual Circuit VC Virtual Container VCC Virtual Channel Connection VCI Virtual Channel Identifier VCL Virtual Channel Link VDSL Very high bit rate Digital Subscriber Line VDT Video Dial Tone VG Voice Grade VF Voice Frequency VLAN Virtual Local Area Network VMWI Visual Message Waiting Indicator VN Virtual Network VNS Virtual Network System VoATM Voice Over ATM VoB Voice Over Broadband VOD Video On Demand VoDSL Voice Over DSL VOFDM Vector Orthogonal Frequency Division Multiplexing VoFR Voice Over Frame Relay VoIP Voice Over Internet Protocol VOP Voice Over Packet VP Virtual Path VPC Virtual Path Connection VPI Virtual Path Identifier VPN Virtual Private Network VPT Virtual Path Terminator VPX Virtual Path Cross-connect VQC Vector Quantizing Code VQC Voice Quantizing Code VQL Vector Quantizing Level VQL Variable Quantizing Level VSAT Very Small Aperature Satellite VSAT Voice over Satellite VT Virtual Tributary VXML Voice Extensible Markup Language
WW-DCS Wideband Digital Crossconnect System WAN Wide Area Network WAN PHY WAN Physical Layer WAP Wireless Application Protocol WATS Wide Area Telephone Service WAW Wide Area Wireless WDCX Wideband and Broadband Digital Cross-connect WDM Wavelength Division Multiplexing WECA Wireless Ethernet Compatibility Alliance WEP Wired Equivalent Privacy WFA Work Force Administration WFQ Weighted Fair Queuing WML Wireless Markup Language XXA-FR Exchange Access Frame Relay XA-SMDS Exchange Access Switched Multi-megabit Data Service XAME eXchange Access Mapping Entity XC Crossconnect XI X Identification (frame) XID Exchange Identification XML Extensible Markup Language XO Extended Office
YZZBTSI Zero Byte Time Slot Interchange ZCS Zero Code Suppression Directory: worddocuments worddocuments -> Embedding research into the ceis computer forensics undergraduate experience Download 145.8 Kb. Share with your friends:
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